not install the Openni drivers onto my system
hg clone https://kforge.ros.org/openni/drivers
cd drivers
make
then, not installed and displayed it
cd openni && make
make[1]: Entering directory '/root/drivers/openni'
git clone https://github.com/OpenNI/OpenNI.git build/openni
make[1]: git: Command not found
make[1]: *** [build/openni] Error 127
make[1]: Leaving directory '/rooroot/drivers/openni'
make: *** [openni_lib] Error2